An improved laser hand-held welding wire for TPU material and its preparation method

Abstract

The present invention relates to the technical field of laser hand-held welding wires, and specifically to an improved laser hand-held welding wire made of TPU material and its preparation method. Among them, the laser hand-held welding wire includes an outer sheath, a control wire, a switch wire, a signal wire, an armored cable optical fiber, and an air pipe. The switch wire, the signal wire, and the armored cable optical fiber are grouped and shielded. The armored cable optical fiber and the air pipe are placed in the middle of the wire, and the switch wire, the control wire, and the signal wire surround the periphery. Among them, the outer sheath is made of TPU material. The present invention greatly improves the outer skin material of the composite cable. By improving the outer skin material and the stranding and filling process of the mixed TPU material, the above-mentioned various cables are combined into a circle, making it have good wear resistance, good toughness and anti-bending properties, enabling the wire to be stressed as a whole during use and bending, with the service life increased by at least more than 10 times, and good corrosion resistance, which can be used in the industrial equipment environment, resistant to chemical corrosion of water, ink, and cutting fluid.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser hand-held welding wires, and particularly relates to an improved laser hand-held welding wire made of TPU material and a preparation method thereof. Background Art

[0002] When the original laser hand-held welding wire is produced and processed, the above components are processed in different processes. Since the currently used cable is a combination of multiple cables wrapped together with a nylon braided network sleeve, each wire is provided with a corresponding connector, and the installation is complex and cumbersome. When using a nylon braided network sleeve to set all the switch wires, armored cables, signal wires, air pipes, power lines, and components together, during the use of the hand-held welding gun, the wire is constantly dragged and bent, resulting in non-conduction, or liquid entering, causing a chemical reaction between the liquid and the wire, the wire skin hardening and cracking, and in severe cases, short-circuiting and fire. The wire is bent and stressed unevenly during use, greatly shortening the service life of the switch wire, signal wire, and air pipe.

[0003] Therefore, there is an urgent need for an improved laser hand-held welding wire made of TPU material and a preparation method thereof to solve the deficiencies of the existing technology. Summary of the Invention

[0004] The present invention provides an improved laser hand-held welding wire made of TPU material and a preparation method thereof, which can solve the problems of potential safety hazards and short service life in the current use of cables.

[0005] To solve the above basic problems, according to one aspect of the present invention, an improved laser hand-held welding wire made of TPU material is provided, including an outer sheath, a control wire, a switch wire, a signal wire, an armored cable optical fiber, and an air pipe. The switch wire, signal wire, and armored cable optical fiber are grouped and shielded to solve the interference problem. The armored cable optical fiber and the air pipe are placed in the middle of the wire, and the switch wire, control wire, and signal wire surround the periphery. The nylon braided outer sheath is cancelled and changed to a TPU material;

[0006] The TPU material is made of the following components by weight: 70-80 parts of TPU elastomer, 15-20 parts of polytetrafluoroethylene, 1-5 parts of diabase powder, 5-10 parts of soft metal wire, 1-5 parts of sericite powder, 2-4 parts of cellulose sodium sulfate powder, and 5-10 parts of thermoplastic elastomer TPE.

[0007] Preferably, the TPU elastomer is TPU elastomer natural color particles.

[0008] Preferably, the polytetrafluoroethylene is polytetrafluoroethylene particles.

[0009] Preferably, the diabase powder is diabase powder with a particle size of 1-3 mm.

[0010] Preferably, the soft metal wire is any one of 0.1 mm copper metal wire and 0.1 mm aluminum metal wire.

[0011] Preferably, the sericite powder is sericite ultrafine powder with a particle size of 2-6 um.

[0012] Preferably, the sodium cellulose sulfate powder is sodium cellulose sulfate powder with a purity of ≥98%.

[0013] Preferably, the thermoplastic elastomer TPE is thermoplastic elastomer TPE particles.

[0014] Preferably, the outer skin material of the switch wire grouped shield is high-density polyethylene.

[0015] Preferably, the grouped shield of the signal wire is composed of aluminum foil, braiding and outer skin;

[0016] The aluminum foil is aluminum foil with a thickness of 0.1-0.2 mm;

[0017] The braiding is nylon braided mesh cloth with a thickness of 0.4-0.6 mm;

[0018] The outer skin material is PC Mylar.

[0019] Preferably, the grouped shield of the armored cable optical fiber is composed of braiding and outer skin;

[0020] The braiding is nylon braided mesh cloth with a thickness of 0.4-0.6 mm;

[0021] The outer skin material is high-density polyethylene.

[0022] Preferably, the welding wire further includes non-woven fabric, which is located between the outer sheath and the control wire, and the non-woven fabric is cable non-woven fabric with a thickness of 0.35-0.5 mm.

[0023] Preferably, the welding wire further includes a filler, which is filled between the switch wire, the signal wire and the armored cable optical fiber, and the filler material is filling cotton thread.

[0024] According to another aspect of the present invention, a method for preparing an improved TPU material laser hand-held welding wire is provided, including the following steps:

[0025] S1. After the switch wire, power wire and signal wire are coated according to the corresponding components, they are placed separately in the mold in sequence. The molten fluid material is extruded into the mold through an extruder, and then the mold is cooled and annealed. The cooling temperature is 40°C and the duration is 1 h to form the inner sheath for grouped shielding to obtain the corresponding grouped shielded wires;

[0026] S2. Mix the TPU elastomer particles, polytetrafluoroethylene particles and thermoplastic elastomer TPE particles and crush them with a pulverizer, and pass through a 100-mesh filter screen to obtain powder 1;

[0027] S3. Stir and heat the powder 1 obtained in step S2 to 250°C. While stirring, slowly add diabase powder, sericite powder, and cellulose sodium sulfate powder in sequence, and stir for 30 minutes to mix them evenly and bond them to the powder 1 to obtain the mixture 2;

[0028] S4. After arranging the grouped shielded switch wires and signal wires obtained in step S1 together with the armored cable, air pipe, and filler, wrap them with non-woven fabric, then arrange the power wire on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0029] S5. Add half of the total mixture 2 to the mold, heat and press it into shape, then slowly cool it to 100°C. While it is still hot, evenly lay the soft metal wire. After laying, add the remaining mixture 2, heat and press it for 10 minutes, and naturally cool it to room temperature to form the outer skin of TPU material.

[0030] Compared with the prior art, in an improved TPU material laser handheld welding wire of the present invention, due to the process design of combining multiple cables into an integral whole, only one connector is used for the whole wire, which greatly reduces the use of metal connectors during the production and processing of the product. The integrated cable layout is adopted to reduce the volume and usage space of the cable, saving production costs.

[0031] The present invention improves the mixed TPU material by improving the outer skin material, adds polytetrafluoroethylene to improve the acid and alkali resistance and corrosion resistance of organic solvents of the TPU material, adds diabase powder to improve the wear resistance of the TPU material, adds sericite powder for ultraviolet shielding to improve the anti-ultraviolet aging effect of the TPU material, adds cellulose sodium sulfate to improve the antistatic performance of the TPU material, adds soft iron wire to improve the tensile performance of the TPU material, and adds thermoplastic elastomer TPE to improve the oil and aging resistance of the TPU material.

[0032] The present invention improves the mixed TPU material and the stranding and filling process by improving the outer skin material, combines the above-mentioned multiple cables into a circle, making it have good wear resistance, good toughness and anti-bending. When the wire is bent during use, the whole wire is stressed, and the service life is increased by at least more than 10 times. Good corrosion resistance can be used in the industrial equipment environment, resistant to water, ink, and chemical corrosion of cutting fluid; at the same time, each group of signal wires is provided with an insulating layer to achieve the function of anti-other signal interference shielding. The integrated cable has a beautiful appearance, is convenient for installation, saves labor, and does not require repeated insertion of more than 10 cable connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following further describes the present invention in detail with reference to the drawings and specific implementation methods.

[0034] Figure 1 It is a structural diagram of the improved laser handheld welding wire. DETAILED DESCRIPTION OF THE INVENTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will, in conjunction with the embodiments of the present invention, clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention. Embodiment 1

[0036] An improved laser handheld welding wire for TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 30 g of diabase powder, 75 g of soft metal wire, 30 g of sericite powder, 30 g of cellulose sodium sulfate powder, and 75 g of thermoplastic elastomer TPE;

[0037] The outer skin material of the switch wire and the power line grouped shielded wire is made of high-density polyethylene;

[0038] The outer skin material of the signal line grouped shielded wire is made of PC mylar;

[0039] The filler material is made of filling cotton thread.

[0040] The preparation method of an improved laser handheld welding wire for TPU material in this embodiment includes the following steps:

[0041] (1) After the switch wire and the power line are coated according to the corresponding components, they are placed separately in the mold in sequence. The molten high-density polyethylene fluid material is extruded into the mold through an extruder, and then the mold is cooled and annealed. The cooling temperature is 40 °C, and the duration is 2 h to form the inner sheath for grouped shielding; after the signal line is coated according to the corresponding components, the outer skin is coated with PC mylar to obtain the corresponding grouped shielded wires;

[0042] (2) Mix 750 g of TPU elastomer particles, 175 g of polytetrafluoroethylene particles, and 75 g of thermoplastic elastomer TPE particles, and then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0043] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 30 g of diabase powder, 30 g of sericite powder, and 30 g of cellulose sodium sulfate powder in sequence under stirring, and stir for 30 min to make them mixed evenly and adhered to the powder 1 to obtain mixture 2;

[0044] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, wrap them with non-woven fabric, arrange the power line on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0045] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 75 g of soft metal wire while it is still hot. After laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the outer skin of TPU material. Example 2

[0046] An improved laser hand-held welding wire of TPU material. The improved TPU outer skin material is made of the following components by weight: 700 g of TPU elastomer, 150 g of polytetrafluoroethylene, 10 g of diabase powder, 50 g of soft metal wire, 10 g of sericite powder, 20 g of cellulose sodium sulfate powder, and 50 g of thermoplastic elastomer TPE.

[0047] The outer skin material of the switch wire and the power line grouped shielded wire is made of high-density polyethylene.

[0048] The outer skin material of the signal line grouped shielded wire is made of PC Mylar.

[0049] The filler material is filling cotton thread.

[0050] The preparation method of an improved laser hand-held welding wire of TPU material in this example includes the following steps:

[0051] (1) After covering the switch wire and the power line according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform the cooling and annealing work on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires.

[0052] (2) Mix 700 g of TPU elastomer particles, 150 g of polytetrafluoroethylene particles, and 50 g of thermoplastic elastomer TPE particles, and then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1.

[0053] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 10 g of diabase powder, 10 g of sericite powder, and 20 g of cellulose sodium sulfate powder in sequence while stirring. Stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2.

[0054] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric. Then arrange the power line on the periphery and cover it with non-woven fabric, and place it in the mold.

[0055] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 50 g of soft metal wire while it is still hot. After laying, add the remaining mixture 2, hot press and shape it for 10 min, and naturally cool it to room temperature to form the TPU material outer skin. Example 3

[0056] An improved TPU material laser hand-held welding wire. The improved TPU outer skin material is made of the following components by weight: 800 g of TPU elastomer, 200 g of polytetrafluoroethylene, 50 g of diabase powder, 100 g of soft metal wire, 50 g of sericite powder, 40 g of cellulose sodium sulfate powder, 100 g of thermoplastic elastomer TPE;

[0057] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0058] The outer skin material of the signal wire grouped shielded wire is made of PC Mylar;

[0059] The filler material is filling cotton thread.

[0060] The preparation method of an improved TPU material laser hand-held welding wire in this example includes the following steps:

[0061] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform the cooling and annealing work on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires;

[0062] (2) Mix 800 g of TPU elastomer particles, 200 g of polytetrafluoroethylene particles, and 100 g of thermoplastic elastomer TPE particles, crush them with a pulverizer, and pass through a 100-mesh filter screen to obtain powder 1;

[0063] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 50 g of diabase powder, 50 g of sericite powder, and 40 g of cellulose sodium sulfate powder in sequence while stirring. Stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0064] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric. Then arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold;

[0065] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 100 g of soft metal wire while it is still hot. After laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the outer skin made of TPU material. Example 4

[0066] An improved laser hand-held welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 700 g of TPU elastomer, 200 g of polytetrafluoroethylene, 50 g of diabase stone powder, 100 g of soft metal wire, 50 g of sericite powder, 40 g of cellulose sodium sulfate powder, and 100 g of thermoplastic elastomer TPE.

[0067] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene.

[0068] The outer skin material of the signal wire grouped shielded wire is made of PC Mylar.

[0069] The filling material is filling cotton thread.

[0070] The preparation method of an improved laser hand-held welding wire made of TPU material in this example includes the following steps:

[0071] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then carry out the cooling and annealing work on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires.

[0072] (2) Mix 700 g of TPU elastomer particles, 200 g of polytetrafluoroethylene particles, and 100 g of thermoplastic elastomer TPE particles, then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1.

[0073] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 50 g of diabase stone powder, 50 g of sericite powder, and 40 g of cellulose sodium sulfate powder in sequence while stirring. Stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2.

[0074] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric, arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold.

[0075] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 100 g of soft metal wire while it is still hot. After laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the outer skin of TPU material. Example 5

[0076] An improved TPU material laser handheld welding wire. The improved TPU outer skin material is made of the following components by weight: 800 g of TPU elastomer, 150 g of polytetrafluoroethylene, 10 g of diabase stone powder, 50 g of soft metal wire, 10 g of sericite powder, 20 g of cellulose sodium sulfate powder, 50 g of thermoplastic elastomer TPE;

[0077] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0078] The outer skin material of the signal wire grouped shielded wire is made of PC Mylar;

[0079] The filling material is filling cotton thread.

[0080] The preparation method of an improved TPU material laser handheld welding wire in this embodiment includes the following steps:

[0081] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform the cooling and annealing work on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires;

[0082] (2) Mix 800 g of TPU elastomer particles, 150 g of polytetrafluoroethylene particles, and 50 g of thermoplastic elastomer TPE particles, crush them with a pulverizer, and pass through a 100-mesh filter screen to obtain powder 1;

[0083] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 10 g of diabase stone powder, 10 g of sericite powder, and 20 g of cellulose sodium sulfate powder in sequence while stirring. Stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0084] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric, arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold;

[0085] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 50 g of soft metal wire while it is still hot, after laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0086] Comparative Example 1

[0087] An improved laser hand-held welding wire made of TPU material, the improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer;

[0088] The outer skin materials of the switch wire and the power cord grouped shielded wires are made of high-density polyethylene;

[0089] The outer skin materials of the signal wire grouped shielded wires are made of PC Mylar;

[0090] The filler material is filled cotton thread.

[0091] The preparation method of an improved laser hand-held welding wire made of TPU material in this embodiment includes the following steps:

[0092] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform cooling and annealing on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires;

[0093] (2) Crush 750 g of TPU elastomer particles with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0094] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C;

[0095] (4) After arranging the grouped shielded switch wires and signal wires obtained in step (1) together with the armored cable, air pipe, and filled cotton thread, cover them with non-woven fabric, arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold;

[0096] (5) Add half of the total mixture 2 into the mold, slowly cool it to 100 °C after hot pressing and forming, evenly lay 75 g of soft metal wire while it is still hot, after laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0097] Comparative Example 2

[0098] An improved laser hand-held welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 30 g of diabase powder, 75 g of soft metal wire, 30 g of sericite powder, 30 g of cellulose sodium sulfate powder, and 75 g of thermoplastic elastomer TPE;

[0099] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0100] The outer skin material of the signal wire grouped shielded wire is made of PC mylar;

[0101] The filling material is filling cotton thread.

[0102] A preparation method of an improved laser hand-held welding wire made of TPU material in this embodiment includes the following steps:

[0103] (1) After the switch wire and the power cord are coated according to the corresponding components, they are placed separately in the mold in sequence. The molten high-density polyethylene fluid material is extruded into the mold through an extruder, and then the mold is cooled and annealed. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after the signal wire is coated according to the corresponding components, the outer skin is coated with PC mylar to obtain the corresponding grouped shielded wires;

[0104] (2) Mix 750 g of TPU elastomer particles and 75 g of thermoplastic elastomer TPE particles and crush them with a pulverizer, and pass through a 100-mesh filter screen to obtain powder 1;

[0105] (3) Heat the powder 1 obtained in step (2) to 250 °C with stirring, and slowly add 30 g of diabase powder, 30 g of sericite powder, and 30 g of cellulose sodium sulfate powder in sequence under stirring, and stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0106] (4) After arranging the grouped shielded switch wires and signal wires obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, wrap them with non-woven fabric, arrange the power cord on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0107] (5) Add half of the total mixture 2 to the mold, hot press and form, then slowly cool down to 100 °C, evenly lay 75 g of soft metal wire while it is hot, after laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0108] Comparative Example 3

[0109] An improved laser handheld welding wire for TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 75 g of soft metal wire, 30 g of sericite powder, 30 g of cellulose sodium sulfate powder, and 75 g of thermoplastic elastomer TPE;

[0110] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0111] The outer skin material of the signal wire grouped shielded wire is made of PC Mylar;

[0112] The filling material is filling cotton thread.

[0113] A preparation method of an improved laser handheld welding wire for TPU material in this embodiment, the steps include:

[0114] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform cooling and annealing on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires;

[0115] (2) Mix 750 g of TPU elastomer particles, 175 g of polytetrafluoroethylene particles, and 75 g of thermoplastic elastomer TPE particles, and then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0116] (3) Heat the powder 1 obtained in step (2) to 250 °C with stirring, and slowly add 30 g of sericite powder and 30 g of cellulose sodium sulfate powder in sequence under stirring, and stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0117] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, wrap them with non-woven fabric, arrange the power cord on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0118] (5) Add half of the total mixture 2 to the mold, perform hot pressing to form, and then slowly cool down to 100 °C. Evenly lay 75 g of soft metal wire while it is hot. After laying, add the remaining mixture 2, perform hot pressing and shaping for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0119] Comparative Example 4

[0120] An improved laser handheld welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 30 g of diabase powder, 30 g of sericite powder, 30 g of cellulose sodium sulfate powder, and 75 g of thermoplastic elastomer TPE;

[0121] For the switch wire, the outer skin material of the power line grouped shield wire is made of high-density polyethylene;

[0122] For the signal wire grouped shield wire, the outer skin material is made of PC mylar;

[0123] The filler material is filling cotton thread.

[0124] The preparation method of an improved laser handheld welding wire made of TPU material in this embodiment includes the following steps:

[0125] (1) After the switch wire and the power line are coated according to the corresponding components, they are placed separately in the mold in sequence. The molten high-density polyethylene fluid material is extruded into the mold through an extruder, and then the mold is cooled and annealed. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after the signal wire is coated according to the corresponding components, the outer skin is coated with PC mylar to obtain the corresponding grouped shield wires;

[0126] (2) Mix 750 g of TPU elastomer particles, 175 g of polytetrafluoroethylene particles, and 75 g of thermoplastic elastomer TPE particles, then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0127] (3) Heat the powder 1 obtained in step (2) to 250 °C with stirring, and slowly add 30 g of diabase powder, 30 g of sericite powder, and 30 g of cellulose sodium sulfate powder in sequence under stirring, and stir for 30 min to make them evenly mixed and bonded to the powder 1 to obtain mixture 2;

[0128] (4) After arranging the grouped shield switch wires and signal wires obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, wrap them with non-woven fabric, arrange the power line on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0129] (5) Add half of the total mixture 2 to the mold, hot press and form, then slowly cool down to 100 °C, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0130] Comparative Example 5

[0131] An improved laser handheld welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 30 g of diabase stone powder, 75 g of soft metal wire, 30 g of sodium cellulose sulfate powder, and 75 g of thermoplastic elastomer TPE;

[0132] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0133] The outer skin material of the signal wire grouped shielded wire is made of PC Mylar;

[0134] The filling material is filling cotton thread.

[0135] The preparation method of an improved laser handheld welding wire made of TPU material in this embodiment includes the following steps:

[0136] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform cooling and annealing on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC Mylar to obtain the corresponding grouped shielded wires;

[0137] (2) Mix 750 g of TPU elastomer particles, 175 g of polytetrafluoroethylene particles, and 75 g of thermoplastic elastomer TPE particles, then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0138] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 30 g of diabase stone powder and 30 g of sodium cellulose sulfate powder in sequence while stirring, and stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0139] (4) After arranging the grouped shielded switch wires and signal wires obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric, then arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold;

[0140] (5) Add half of the total mixture 2 to the mold, perform hot pressing to form, then slowly cool down to 100 °C, evenly lay 75 g of soft metal wire while it is hot. After laying, add the remaining mixture 2, perform hot pressing and shaping for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0141] Comparative Example 6

[0142] An improved laser hand-held welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 30 g of diabase stone powder, 75 g of soft metal wire, 30 g of sericite powder, and 75 g of thermoplastic elastomer TPE;

[0143] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0144] The outer skin material of the signal wire grouped shielded wire is made of PC mylar;

[0145] The filler material is filling cotton thread.

[0146] The preparation method of an improved laser hand-held welding wire made of TPU material in this embodiment includes the following steps:

[0147] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform cooling and annealing on the mold. The cooling temperature is 40 °C and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC mylar to obtain the corresponding grouped shielded wires;

[0148] (2) Mix 750 g of TPU elastomer particles, 175 g of polytetrafluoroethylene particles, and 75 g of thermoplastic elastomer TPE particles, and then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1;

[0149] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 30 g of diabase stone powder and 30 g of sericite powder in sequence under stirring, and stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0150] (4) After arranging the grouped shielded switch wire and signal wire obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, wrap them with non-woven fabric, arrange the power cord on the periphery, wrap it with non-woven fabric, and place it in the mold;

[0151] (5) Add half of the total mixture 2 to the mold, perform hot pressing to form, and then slowly cool down to 100 °C. While it is still hot, evenly lay 75 g of soft metal wire. After laying, add the remaining mixture 2, perform hot pressing and shaping for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0152] Comparative Example 7

[0153] An improved laser handheld welding wire made of TPU material. The improved TPU outer skin material is made of the following components by weight: 750 g of TPU elastomer, 175 g of polytetrafluoroethylene, 30 g of diabase stone powder, 75 g of soft metal wire, 30 g of sericite powder, and 30 g of cellulose sodium sulfate powder;

[0154] The outer skin material of the switch wire and the power cord grouped shielded wire is made of high-density polyethylene;

[0155] The outer skin material of the signal wire grouped shielded wire is made of PC mylar;

[0156] The filling material is filling cotton thread.

[0157] The preparation method of an improved laser handheld welding wire made of TPU material in this embodiment includes the following steps:

[0158] (1) After covering the switch wire and the power cord according to the corresponding components, place them separately in the mold in sequence. Extrude the molten high-density polyethylene fluid material into the mold through an extruder, and then perform cooling and annealing on the mold. The cooling temperature is 40 °C, and the duration is 2 h to form the inner sheath for grouped shielding; after covering the signal wire according to the corresponding components, cover the outer skin with PC mylar to obtain the corresponding grouped shielded wires;

[0159] (2) Mix 750 g of TPU elastomer particles and 175 g of polytetrafluoroethylene particles, crush them with a pulverizer, and pass through a 100-mesh filter screen to obtain powder 1;

[0160] (3) Stir and heat the powder 1 obtained in step (2) to 250 °C, and slowly add 30 g of diabase stone powder, 30 g of sericite powder, and 30 g of cellulose sodium sulfate powder in sequence under stirring. Stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2;

[0161] (4) After arranging the grouped shielded switch wires and signal wires obtained in step (1) together with the armored cable, air pipe, and filling cotton thread, cover them with non-woven fabric, arrange the power cord on the periphery, cover it with non-woven fabric, and place it in the mold;

[0162] (5) Add half of the total mixture 2 to the mold, hot press and form, then slowly cool down to 100 °C. While it is still hot, evenly lay 75 g of soft metal wire. After laying, add the remaining mixture 2, hot press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

[0163] Perform wear resistance testing on the improved TPU outer skin material through a Taber abrasion tester. Specimen size: outer diameter 108 mm, inner diameter 8 mm; test load 500 g; number of test times 1000 times; rotational speed of the test disc is 100 revolutions / min.

[0164] The corrosion resistance test of the modified TPU outer skin material was carried out by the immersion method. The test piece size: length 50 mm, width 20 mm, thickness 5 mm. It was soaked in 2 mol sulfuric acid solution for 24 hours, taken out, rinsed clean and dried, then put into 2 mol sodium hydroxide solution and soaked for 24 h, taken out, rinsed clean and dried, put into ethanol and soaked for 24 h, and dried to check the appearance change and weight change.

[0165] The abrasion resistance test of the modified TPU outer skin material was carried out by a Taber abrasion tester for 100 times. The test piece size: outer diameter 108 mm, inner diameter 8 mm; the test load was 250 g; the rotation speed of the test disc was 100 revolutions / min. Then, the antistatic property was tested by a Simco FMX004 electrostatic tester.

[0166] The anti-ultraviolet aging test of the modified TPU outer skin material was carried out by a UVB-313EL ultraviolet light aging chamber. The specimen was 100 mm long, 20 mm wide and 5 mm thick. It was irradiated and exposed for 8 h at a black standard temperature of 60 °C ± 3 °C, and then non-irradiated and condensation-exposed for 4 h at a black standard temperature of 50 °C ± 3 °C. The tensile test of the specimen was carried out by a tensile testing machine.

[0167] The tensile test of the modified TPU outer skin material was carried out by a tensile testing machine. The specimen was 100 mm long, 20 mm wide and 5 mm thick.

[0168] Table 1 Comparison of the results of the examples and the comparative examples

[0169] It can be seen from Table 1 that the abrasion resistance, acid and alkali and organic solvent corrosion resistance, antistatic property, anti-aging property and tensile resistance of the modified TPU outer skin material of the present application have been significantly improved.

[0170] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention also belong to the protection scope of the present invention.

Claims

1. An improved laser handheld welding wire for TPU material, characterized in that, It includes an outer sheath, a control line, a switch line, a signal line, an armored cable optical fiber, and an air tube. The switch line, the signal line, and the armored cable optical fiber are grouped and shielded. The armored cable optical fiber and the air tube are placed in the middle of the wire, and the switch line, the control line, and the signal line surround the periphery. Among them, the outer sheath is made of TPU material; The TPU material is made of the following components by weight: 70-80 parts of TPU elastomer, 15-20 parts of polytetrafluoroethylene, 1-5 parts of diabase stone powder, 5-10 parts of soft metal wire, 1-5 parts of sericite powder, 2-4 parts of cellulose sodium sulfate powder, 5-10 parts of thermoplastic elastomer TPE; The outer skin material of the grouped shield of the switch line is high-density polyethylene; The grouped shield of the signal line is composed of aluminum foil, braiding, and an outer skin; the aluminum foil is aluminum foil with a thickness of 0.1-0.2 mm; the braiding is a nylon braided mesh cloth with a thickness of 0.4-0.6 mm; the outer skin material is PC Mylar; The grouped shield of the armored cable optical fiber is composed of braiding and an outer skin; the braiding is a nylon braided mesh cloth with a thickness of 0.4-0.6 mm; the outer skin material is high-density polyethylene.

2. The improved TPU material laser hand-held welding line according to claim 1, characterized in that, The TPU elastomer is TPU elastomer natural color particles; the polytetrafluoroethylene is polytetrafluoroethylene particles; the particle size of the corresponding particles of the diabase stone powder is 1-3 mm; the soft metal wire is any one of 0.1 mm copper metal wire and 0.1 mm aluminum metal wire; the sericite powder includes sericite ultrafine powder with a particle size of 2-6 um; the cellulose sodium sulfate powder is cellulose sodium sulfate powder with a purity of ≥98%; the thermoplastic elastomer TPE is thermoplastic elastomer TPE particles.

3. The improved TPU material laser hand-held welding line according to claim 1, characterized in that: It also includes non-woven fabric, and the non-woven fabric is located between the outer sheath and the control line. The non-woven fabric includes cable non-woven fabric with a thickness of 0.35-0.5 mm.

4. The improved TPU material laser hand-held welding line according to claim 1, wherein: It also includes a filler, and the filler is filled between the switch line, the signal line, and the armored cable optical fiber. The filler material is filling cotton thread.

5. A method for preparing an improved laser hand-held welding wire of a TPU material according to any one of claims 1-4, characterized in that: It includes the following steps: S1. After the switch line, the power line, and the signal line are coated according to the corresponding components, they are placed separately in the mold in sequence. The molten fluid material is extruded into the mold through an extruder, and then the mold is cooled and annealed. The cooling temperature is 40 °C, and the duration is 1 h to form the inner sheath for grouped shielding to obtain the corresponding grouped shielded wires; S2. Mix the TPU elastomer particles, polytetrafluoroethylene particles, and thermoplastic elastomer TPE particles, and then crush them with a pulverizer and pass through a 100-mesh filter screen to obtain powder 1; S3. Stir and heat the powder 1 obtained in step S2 to 250 °C, and slowly add diabase stone powder, sericite powder, and cellulose sodium sulfate powder in sequence under stirring, and stir for 30 min to make them evenly mixed and adhered to the powder 1 to obtain mixture 2; S4. After arranging and placing the grouped shielded switch line and signal line obtained in step S1 together with the armored cable, the air tube, and the filler, wrap them with non-woven fabric, arrange the power line on the periphery, wrap it with non-woven fabric, and place it in the mold; S5. Add half of the total mixture 2 to the mold, hot-press and form, then slowly cool down to 100 °C, evenly lay the soft metal wire while it is hot. After laying, add the remaining mixture 2, hot-press and shape for 10 min, and naturally cool to room temperature to form the TPU material outer skin.

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